How do you grow alfalfa grass?

How to grow alfalfa grass and what season is suitable.

1. Sowing method and sowing amount Most areas are mainly strip sowing, with a row spacing of 30cm, which is conducive to ventilation and light transmission and field management. The sowing amount is generally about lkg mu, the seeding field should be less, the saline-alkali land can be appropriately more, and the sowing amount is too large and the seedlings are weak. The sowing depth is the key to affect the quality of the seedling, generally the sowing is too deep, the best depth is.

2. Weeding removal of weeds is a major content of alfalfa field management, one is in the seedling stage, the other is after the summer harvest, due to the weak growth of alfalfa in these two periods, the damage to weeds is more serious, especially after the summer harvest, the water and heat synchronous weeds grow fast, no matter what method is taken, it must be timely standardized. Herbicides should be chosen carefully to avoid poisoning in livestock.

3. Irrigation and drainage Alfalfa consumes a lot of water, and 800L of water is required per lkg of dry matter produced. Watering before winter, after rejuvenation, and during drought. Coastal and low-injection lands should pay attention to drainage in the rainy season, and alfalfa will die if flooded for 24 hours.

4. Pest control Alfalfa must be timely prevented and controlled when encountering pests and diseases during the growth period, otherwise the yield and quality will be affected. Generally, spray with pine borer, dimethoate, fenvalerate and other sprays to control pests, such as rust, brown spot, downy mildew, carbendazim, tobuzin and other agents for prevention and control.

5. Harvesting is generally in the first flowering period, that is, when the flowering reaches 1 10, the harvest begins, and the latest can not exceed the full flowering period. Alfalfa is a perennial plant with strong regeneration, and can be harvested 3-4 times a year, and the last harvest should not be too late, otherwise it will affect the accumulation of nutrients and is not conducive to safe wintering. Generally, 40-50 days of growth should be allowed after harvesting.

The height of stubble should be 5cm.

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<> soaking seeds with warm water after germination treatment, put alfalfa grass seeds into the sack, put the sack into the well water at night and soak for 10 hours, after the soaking is completed, the seeds will be placed in a cool place for 3 days to grind, properly watered and moisturized, multi-row sowing and sowing after deep fertilization, early autumn and late spring sowing per mu is 50 kg, late autumn and early spring sowing, 15 kg per mu of seed use, strengthen fertilizer and water management and pest control in the later stage of planting, and a small number of flowers can be harvested for the first time.

1. Soak seeds to promote germination

Soak seeds in warm water of 55-60 for 5 minutes, eliminate floating seeds, usually carry out germination treatment before sowing, germination method is to put the seeds into the sack, put them in well water or river water at night and soak them for 10 hours, take out the seeds and put them in a cool place for 2-3 days, and water them with a watering can every 3 hours with cool water.

Second, the land preparation and sowing

1. Choose alfalfa grass near the water source, fertile, loose and acidic soil, alfalfa grass can be planted with sandy soil, but must not be planted with relatively large clay soil, the weeds in the field will be completely removed when preparing the land, alfalfa grass is a shallow root crop, usually about 15 cm deep, after ploughing, apply foot fertilizer, apply 1000 kg of human and animal manure per mu as base fertilizer, and make a 20 cm high furrow, furrow width meter, in order to facilitate drainage, after leveling the furrow surface can be sown.

2. Alfalfa grass sowing adopts multi-row sowing, generally early autumn and late spring sowing when the temperature is higher, the soil is dry, the seedling rate is low, the seed amount per mu is 40-50 kg, and the seed dosage per mu is 15 kg in late autumn and early spring.

3. Post-management

1. Fertilizer and water management.

Every 1 harvest, spray urea solution or thin rotted human urine on the 2nd day after harvesting, it is not recommended to top dressing immediately after harvesting, otherwise it is easy to cause rot. Alfalfa should be watered once a day in the morning and evening after sowing, keep the soil moist, seedlings can emerge 4-5 days after sowing, water once a day after seedlings emerge, watering can be stopped on the 7th day after seedlings, after heavy rain and spring rain, pay attention to timely drainage.

2. Pest control.

Aphids damage alfalfa grass in April-May and October-November, and can be sprayed with 40% dimethoate 800 times or 50% aphid resistance 2000-3000 times.

3. Weeding and replenishing seedlings.

Alfalfa grass grows slowly at the seedling stage and is susceptible to weeds, so weeds should be removed frequently at the seedling stage. In summer, the lack of seedlings is formed by high blind temperature and drought, which can be replanted in autumn to restore the neatness of the lawn.

Fourth, harvest

Alfalfa can be harvested at least 3-4 times a year, the first time is generally harvested when the alfalfa blooms a small number of flowers, and then it can be harvested every 35-45 days or so, after each harvest, remember to weed, fertilize, and promote the growth of branches and leaves.

Seed Treatment: Fresh alfalfa seeds contain 10% 30% or more hardness, mixing the seeds with sand and rubbing them or grinding the seeds once in a rice mill can significantly improve the germination rate of the seeds. Drying seeds for 2 3 days or short-term high temperature treatment (50 60 15 minutes to 1 hour) before sowing can also improve germination rate.

Sowing period: The Yangtze River basin can be sown in March and October, and September and October are appropriate. Sowing is best in September, the seedlings emerge quickly and neatly, the survival rate is high, and the branches have reached more than 3 before wintering, which is conducive to wintering.

Spring sowing is in early to mid-March. Spring sowing or summer sowing is suitable in all parts of the north.

Sowing Amount: Pure seeds with a high germination rate require seed kilograms per 667 m2. The amount of sowing has a significant impact on the yield in the first year. Proper dense planting can shade each other, reduce evaporation, increase the moist environment, and be beneficial for increasing the height and number of shoots.

Sowing method: Alfalfa grows fast, has many branches, full branches and leaves, high yield, and many times of mowing.

1. Planting time

Spring and autumn are the peak seasons for alfalfa planting, and the good growth temperature of alfalfa is about 5 35 degrees.

2. Sowing method

Most areas are dominated by strip sowing, with a row spacing of 30 cm, which is conducive to ventilation and light transmission and field management. The sowing amount is generally about l kilogram mu, the planting field should be less, the saline-alkali land can be appropriately more, and the sowing amount is too large and the seedlings are weak. The sowing depth is the key to the quality of the seedling, generally the sowing is too deep, the best depth is centimeters.

3. Growth environment

Alfalfa likes an environment with sufficient sunlight, high moisture and high air humidity, so when planting alfalfa, if it is planted outdoors in the open field, it is necessary to choose a sunny place, and at the same time, it is necessary to choose a good loose soil, preferably a fertile acidic soil.

4. Harvesting and utilization

Alfalfa can be harvested many times a year, alfalfa is regenerative and can be harvested 3-4 times a year, and it can be harvested once in 40-50 days from spring to autumn, and the yield is very high.

Alfalfa grass can generally be sown in March-September, before sowing, the seeds can be mixed with fine sand and rubbed or milled, grinding off the hard skin, or soaked in 50 60 warm water for 15 minutes 60 minutes, remove and dry and sow seeds.

1 kg of seeds per mu, if the main purpose is to pick fresh grass, you can sow in narrow rows, with a row spacing of 20 cm and 30 cm; If the main purpose is to collect seeds, you can sow in holes, and the improved grasslands, river beaches, and both sides of the road can be sown, and the general soil sowing depth is 2 cm 3 cm, the sand sowing depth is 3 cm 4 cm, and the clay sowing depth is 2 cm.

Alfalfa is a perennial flowering plant with strong adaptability, prefers warm and humid climate, and can be planted in both soil pH; Resistant to drought, heat and cold, high yield, eggplant can also improve the soil.

Growing environment

Alfalfa is a perennial flowering plant, with strong adaptability, prefers warm and humid climate, and can be planted in the soil pH; It is resistant to drought, cold and heat, high yield, and can also improve the soil. Due to the slow growth of seedlings, alfalfa can be sown all year round.

In addition to raising livestock, alfalfa also has tenacious vitality, which can be used for soil and water conservation, sand control and sand fixation, slope protection and greening of mountainous areas. The garden is mostly used for greening on saline-alkali land and barren land, and grass species for landscape wildflowers.

It is widely distributed in Inner Mongolia, Sichuan, Guizhou, Guangxi, Hubei, Jiangsu, Fujian, Xinjiang, Gansu and other places in China.